[BUG] Remote Control: AskUserQuestion answers not registered, session restarts question loop

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Remote Control sessions have multiple reliability issues:

1. AskUserQuestion answers silently lost: Answered multiple AUQ prompts via the remote interface (claude.ai/code), but none of the answers were registered by the local session. After some time, the exact same question loop restarted from the beginning as if no answers were ever given.

1. Connection instability: Connections break frequently and sometimes don't establish at all.

1. Session state not preserved: After reconnection, the entire conversation flow restarts rather than continuing from where it left off.

This makes Remote Control essentially unusable for any workflow that requires user input via AskUserQuestion, since there's no guarantee answers will be received by the local process.

What Should Happen?

1. Answers submitted via the remote interface should be reliably delivered to the local Claude Code process
2. Answers should persist across brief disconnections/reconnections
3. The session should resume from where it left off after reconnection, not restart the question loop
4. Connection should be stable and not drop frequently

Error Messages/Logs

Steps to Reproduce

1. Start claude remote-control on local machine (Windows 11)
2. Connect via claude.ai/code in browser on another device
3. Start a task that triggers multiple AskUserQuestion tool calls
4. Answer each question via the remote interface
5. Observe: answers are not received by the local session
6. After timeout or reconnection, the same questions appear again from the beginning
7. All previously given answers are lost

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.74 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_